South Central Alaska
Overview
This geographic zone was developed with funding from Joint Fire Sciences Project 98-1-8-06, A Risk Based Comparison of Potential Fuel Treatment Trade-Off Models. Vegetation attributes were based on inventories developed by the Kenai Peninsula Borough through the Spruce Beetle project. Process behavior knowledge was derived from meeting with Marvin Rude from the Borough and individuals from the Forest Service, State and Private Office.
Ecological Stratification
No stratification was used for the Kenai.
Vegetation Attributes
| Lifeform | Species Abbreviation | Species Name |
| Tree | A | aspen |
| AB | aspen-birch | |
| AB-BS | aspen-birch-black spruce | |
| AB-CW | aspen birch-cottonwood | |
| AB-DLS | aspen birch-dead Lutz spruce | |
| AB-DSS | aspen birch-dead Sitka spruce | |
| AB-DWS | aspen-birch-dead white spruce | |
| AB-HD | aspen birch-hardwood | |
| AB-LS | aspen birch-Lutz spruce | |
| AB-MH | aspen birch-mtn. Hemlock | |
| A-BS | aspen-black spruce | |
| AB-SS | aspen birch-Sitka spruce | |
| AB-WH | aspen birch-w. hemlock | |
| AB-WS | aspen-birch-white spruce | |
| AC | Alaska cedar | |
| A-CW | aspen-cottonwood | |
| A-DLS | aspen-dead Lutz spruce | |
| A-DSS | aspen-dead Sitka spruce | |
| A-DWS | aspen-dead white spruce | |
| A-HD | aspen-hardwood | |
| A-LS | aspen-Lutz spruce | |
| A-MH | aspen-mtn. Hemlock | |
| A-SS | aspen-Sitka spruce | |
| A-WH | aspen-w. hemlock | |
| A-WS | aspen-white spruce | |
| B | birch | |
| BA | birch-aspen | |
| BA-BS | birch aspen-black spruce | |
| BA-CW | birch aspen-cottonwood | |
| BA-DLS | birch aspen-dead Lutz spruce | |
| BA-DSS | birch aspen-dead Sitka spruce | |
| BA-DWS | birch aspen-dead white spruce | |
| BA-HD | birch aspen-hardwood | |
| BA-LS | birch aspen-Lutz spruce | |
| BA-MH | birch aspen-mtn. Hemlock | |
| BA-SS | birch aspen-Sitka spruce | |
| BA-WH | birch aspen-w. hemlock | |
| BA-WS | birch aspen-white spruce | |
| B-BS | birch-black spruce | |
| B-CW | birch-cottonwood | |
| B-DLS | birch-dead Lutz spruce | |
| B-DSS | birch-dead Sitka spruce | |
| B-DWS | birch-dead white spruce | |
| B-HD | birch-hardwood | |
| B-LS | birch-Lutz spruce | |
| B-MH | birch-mtn. Hemlock | |
| BS | black spruce | |
| BS-A | black spruce-aspen | |
| BS-AB | black spruce-aspen-birch | |
| BS-B | black spruce-birch | |
| BS-BA | black spruce-birch aspen | |
| BS-CW | black spruce-cottonwood | |
| BS-DLS | black spruce-dead Lutz spruce | |
| BS-DSS | black spruce-dead Sitka spruce | |
| BS-DWS | black spruce-dead white spruce | |
| BS-HD | black spruce-hardwood | |
| BS-LS | black spruce-Lutz spruce | |
| BS-MH | black spruce-mtn. Hemlock | |
| B-SS | birch-Sitka spruce | |
| BS-SS | black spruce-Sitka spruce | |
| BS-WH | black spruce-w.hemlock | |
| BS-WS | black spruce-white spruce | |
| B-WH | birch-w. hemlock | |
| B-WS | birch-white spruce | |
| CW | cottonwood | |
| CW-A | cottonwood-aspen | |
| CW-AB | cottonwood-aspen birch | |
| CW-B | cottonwood-birch | |
| CW-BA | cottonwood-aspen birch | |
| CW-BS | cottonwood-black spruce | |
| CW-DLS | cottonwood-dead Lutz spruce | |
| CW-DSS | cottonwood-dead Sitka spruce | |
| CW-DWS | cottonwood-dead white spruce | |
| CW-HD | cottonwood-hardwood | |
| CW-LS | cottonwood-Lutz spruce | |
| CW-MH | cottonwood-mtn. Hemlock | |
| CW-SS | cottonwood-Sitka spruce | |
| CW-WH | cottonwood-w. hemlock | |
| CW-WS | cottonwood-white spruce | |
| DLS | dead Lutz spruce | |
| DLS-A | dead Lutz spruce-aspen | |
| DLS-AB | dead Lutz spruce-aspen birch | |
| DLS-B | dead Lutz spruce-birch | |
| DLS-BA | dead Lutz spruce-birch aspen | |
| DLS-BS | dead Lutz spruce-black spruce | |
| DLS-CW | dead Lutz spruce-cottonwood | |
| DLS-HD | dead Lutz spruce-hardwood | |
| DLS-LS | Dead Lutz spruce-Lutz spruce | |
| DLS-MH | dead Lutz spruce-mountain hemlock | |
| DLS-SS | dead Lutz spruce-Sitka spruce | |
| DLS-WH | dead Lutz spruce-western hemlock | |
| DLS-WS | dead Lutz spruce-white spruce | |
| DSS | dead Sitka spruce | |
| DSS-A | dead Sitka spruce-aspen | |
| DSS-AB | dead Sitka spruce-aspen birch | |
| DSS-B | dead Sitka spruce-birch | |
| DSS-BA | dead Sitka spruce-birch aspen | |
| DSS-BS | dead Sitka spruce-black spruce | |
| DSS-CW | dead Sitka spruce-cottonwood | |
| DSS-HD | dead Sitka spruce-hardwood | |
| DSS-MH | dead Sitka spruce-mountain hemlock | |
| DSS-SS | Dead Sitka spruce-Sitka spruce | |
| DSS-WH | dead Sitka spruce-western hemlock | |
| DWS | dead white spruce | |
| DWS-A | dead white spruce-aspen | |
| DWS-AB | dead white spruce-aspen-birch | |
| DWS-B | dead white spruce-birch | |
| DWS-BA | dead white spruce-birch aspen | |
| DWS-BS | dead white spruce-black spruce | |
| DWS-CW | dead white spruce-cottonwood | |
| DWS-HD | dead white spruce-hardwood | |
| DWS-MH | dead white spruce-mountain hemlock | |
| DWS-SS | dead white spruce-Sitka spruce | |
| DWS-WH | dead white spruce-western hemlock | |
| DWS-WS | dead white spruce-white spruce | |
| HD | hardwood | |
| HD-A | hardwood-aspen | |
| HD-AB | hardwood-aspen birch | |
| HD-B | hardwood-birch | |
| HD-BA | hardwood-birch aspen | |
| HD-BS | hardwood-black spruce | |
| HD-CW | hardwood-cottonwood | |
| HD-DLS | hardwood-dead Lutz spruce | |
| HD-DSS | hardwood-dead Sitka spruce | |
| HD-DWS | hardwood-dead white spruce | |
| HD-LS | hardwood-Lutz spruce | |
| HD-MH | hardwood-mtn. Hemlock | |
| HD-SS | hardwood-Sitka spruce | |
| HD-WH | hardwood-w. hemlock | |
| HD-WS | hardwood-white spruce | |
| LS | Lutz spruce | |
| LS-A | Lutz spruce-aspen | |
| LS-AB | Lutz spruce-aspen birch | |
| LS-B | Lutz spruce-birch | |
| LS-BA | Lutz spruce-birch aspen | |
| LS-BS | Lutz spruce-black spruce | |
| LS-CW | Lutz spruce-cottonwood | |
| LS-CW | Lutz spruce-cottonwood | |
| LS-DLS | Lutz spruce-Dead Lutz spruce | |
| LS-HD | Lutz spruce-hardwood | |
| LS-MH | Lutz spruce-mountain hemlock | |
| LS-SS | Lutz spruce-Sitka spruce | |
| LS-WH | Lutz spruce-western hemlock | |
| MH | mountain hemlock | |
| MH-A | mtn. Hemlock-aspen | |
| MH-AB | mtn. Hemlock-aspen birch | |
| MH-AC | mountain hemlock-Alaska cedar | |
| MH-B | mountain hemlock-birch | |
| MH-B | mtn. Hemlock-birch | |
| MH-BA | mtn. Hemlock-birch aspen | |
| MH-BS | mtn hemlock-black spruce | |
| MH-CW | mtn. Hemlock-cottonwood | |
| MH-DLS | mountain hemlock-dead Lutz spruce | |
| MH-DSS | mountain hemlock-dead Sitka spruce | |
| MH-HD | mtn. Hemlock-hardwood | |
| MH-LS | mountain hemlock-Lutz spruce | |
| MH-SS | mountain hemlock-Sitka spruce | |
| MH-WH | mountain hemlock-western hemlock | |
| MH-WS | mtn. Hemlock-white spruce | |
| SS | Sitka spruce | |
| SS-A | Sitka spruce-aspen | |
| SS-AB | Sitka spruce-aspen birch | |
| SS-B | Sitka spruce-birch | |
| SS-BA | Sitka spruce-birch aspen | |
| SS-BS | Sitka spruce-black spruce | |
| SS-CW | Sitka spruce-cottonwood | |
| SS-DLS | Sitka spruce-dead Lutz spruce | |
| SS-DSS | Sitka spruce-Dead Sitka spruce | |
| SS-DWS | Sitka spruce-dead white spruce | |
| SS-HD | Sitka spruce-hardwood | |
| SS-MH | Sitka spruce-mountain hemlock | |
| SS-WH | Sitka spruce-western hemlock | |
| SS-WS | Sitka spruce-white spruce | |
| WH | western hemlock | |
| WH-A | w. hemlock-aspen | |
| WH-AB | w. hemlock-aspen birch | |
| WH-B | w. hemlock-birch | |
| WH-BA | w. hemlock-birch aspen | |
| WH-BS | w. hemlock-black spruce | |
| WH-CW | w. hemlock-cottonwood | |
| WH-DLS | western hemlock-dead Lutz spruce | |
| WH-DSS | western hemlock-dead Sitka spruce | |
| WH-DWS | western hemlock-dead white spruce | |
| WH-HD | w. hemlock-hardwood | |
| WH-LS | w. hemlock-Lutz spruce | |
| WH-SS | western hemlock-Sitka spruce | |
| WH-WS | w. Hemlock-white spruce | |
| WS | white spruce | |
| WS-A | white spruce-aspen | |
| WS-AB | white spruce-aspen-birch | |
| WS-B | white spruce-birch | |
| WS-BA | white spruce-birch aspen | |
| WS-BS | white spruce-black spruce | |
| WS-CW | white spruce-cottonwood | |
| WS-DWS | white spruce-dead white spruce | |
| WS-HD | white spruce-hardwood | |
| WS-MH | white spruce-mountain hemlock | |
| WS-SS | white spruce-Sitka spruce | |
| WS-WH | white spruce-western hemlock | |
| Shrub | Wil | willow |
| Ald | alder | |
| mixed tall shrub | mixed tall shrub | |
| mixed low shrub | mixed low shrub | |
| mixed dwarf shrub | mixed dwarf shrub | |
| Grass | Herb | herbaceous |
| GH | grasses/herbs | |
| Aqu | aquatic | |
| Non-Forest | OCEAN | ocean |
| NF | NF | |
| ALP | alp | |
| AGR | agriculture |
Size Classes
| Size Class | Definition | Size Limit |
| Tree | ||
| SS | Seedling-sapling | 1 - 5 inch DBH |
| SS-SS | Seedling-sapling - seedling-sapling | |
| SS-POLE | Seedling-sapling - pole | |
| SS-LARGE | Seedling-sapling - large | |
| POLE | Pole |
5.1 - 9 inch DBH - conifer 5.1 - 11 inch DBH - hardwood |
| POLE-SS | Pole - seedling-sapling | |
| POLE-POLE | Pole - pole | |
| POLE-LARGE | Pole - large | |
| LARGE | Large |
> 9 inch DBH - conifer > 11 inch DBH - hardwood |
| LARGE-SS | Large - seedling-sapling | |
| LARGE-POLE | Large - pole | |
| LARGE-LARGE | Large - large | |
| Shrub | ||
| TALL-SHRUB | Tall shrub | |
| LOW-SHRUB | Low shrub | |
| DWARF-SHRUB | Dwarf shrub | |
| Grass | ||
| HERB | Herbaceous | |
| GH | Grass or herbaceous | |
| AQUATIC | Aquatic herbaceous | |
| Non-Forest | ||
| NF | Non-forest | |
Densities
| Density | Definition | Canopy Closure |
| Tree | ||
| W | Woodland | 10 - 24% |
| O | Open | 25 - 59% |
| C | Closed | 60 - 100% |
| Shrub | ||
| W | Woodland | 10 - 24% |
| O | Open | 25 - 59% |
| C | Closed | 60 - 100% |
| Herbaceous | ||
| C | Closed | 60 - 100% |
Disturbance Processes
| Abbreviation | Definition |
| LSF | Light severity fire |
| MSF | Mixed severity fire |
| SRF | Stand replacing fire |
| LOW-WINDTHROW | Low windthrow |
| MEDIUM-WINDTHROW | Medium windthrow |
| HIGH-WINDTHROW | High windthrow |
| WILDLIFE-BROWSING | Wildlife browsing in aspen and birch |
| ROOT-DISEASE | Root disease |
| LIGHT-SB | Light spruce beetle |
| MEDIUM-SB | Medium spruce beetle |
| HIGH-SB | High spruce beetle |
Discussion of System Knowledge
Root disease is the only process probability logic that is accessible in the user interface. Windthrow and wildlife browsing must be locked-in to be used. The spruce beetle probability comes from the incorporation of components of the spruce beetle expert system. The system knowledge on the spruce beetle probability is not accessible in SIMPPLLE version 2.5.